Bethlehem, PA solar installation & market data
Updated September 30, 2026 By The SolarDNA Data Team
Bethlehem has 1,044 solar installations across 4 zip codes at a median installed cost of $6.15/W, installations down 21.2% over the trailing twelve months, and an installs-weighted Market Score of 33.
Active installations
1,044
Zip markets
4
Median cost
$6.15/W
12-mo growth
▼ 21.2%
Installers active
18
City Market Score
Fair · installs-weighted across 4 zips
Best zip in Bethlehem scores higher than 18% of U.S. zip markets.
Versus Pennsylvania
How Bethlehem compares with the state
Installed cost
$0.15/W above
state median $5.99/W
Market score
33 vs 50
Pennsylvania scores 50
Share of state installs
1.18%
of 88.5K tracked statewide
Battery attach
0.0%
state 0.0%
Statewide momentum
▲ 48.7%
residential solar added in Pennsylvania, 12 months through Jul 2026
Statewide market
105.3K systems
2.8% of homes · utility-reported through Jul 2026
Next-12-month outlook: 119–147 installs (midpoint 133)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±11% band. Not a forecast of permits or policy.
Growth & pricing
Bethlehem by year
149 installs in the trailing twelve months vs 189 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Bethlehem
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | ASTRUM SOLAR | 12 | 0 | 3 | $5.16 |
| 2 | SONIC DEVELOPMENT | 9 | 0 | 4 | $6.31 |
| 3 | HEAT SHED | 7 | 0 | 3 | $6.55 |
| 4 | KEYSTONE COUNTRY BUILDING GROUPKEYSTONE RENEWABLE ENERGY SOLUTIONS | 6 | 0 | 3 | $6.04 |
| 5 | SUNTRICITY POWER | 3 | 0 | 2 | $7.66 |
| 6 | BORREGO SOLAR | 2 | 0 | 2 | $5.19 |
| 7 | SOLULAR | 2 | 0 | 2 | $8.61 |
| 8 | KEYSTONE HOME ENERGY SAVERS | 2 | 0 | 1 | $9.91 |
| 9 | MIDATLANTIC RENEWABLES | 2 | 0 | 1 | $5.20 |
| 10 | PENN RENEWABLES | 2 | 0 | 2 | $7.77 |
| 11 | SOLAR ELECTRIC POWER SYSTEMS | 2 | 0 | 2 | $5.54 |
| 12 | WEST SIDE ELECTRIC COMPANY | 1 | 0 | 1 | $6.31 |
| 13 | GREEN POWER ENERGY | 1 | 0 | 1 | $2.93 |
| 14 | SKY SOLAR SOLUTIONS | 1 | 0 | 1 | $4.54 |
| 15 | I NEED SOLAR COM | 1 | 0 | 1 | $6.10 |
| 16 | EVERGREEN SOLAR AND GEOTHERMAL | 1 | 0 | 1 | $5.24 |
| 17 | KC GREEN ENERGY | 1 | 0 | 1 | $6.23 |
| 18 | RENU BUILDING ENERGY SOLUTIONS | 1 | 0 | 1 | $6.57 |